Saved project file shows empty

The saved project file shows as an empty file! i.e. After saving certain datas in a project file (with.ibb extension) for future burning, If we re-open it, it shows as an empty project file! There is no saved data in that project file. Please check this.

I save project files every day just fine. I have ImgBurn open a default .ibb every time it starts. So, it seems to be an issue on your end.

I'd first try saving the .ibb file to another location. Make sure that regardless of where you save, it happens. I'd also try to make sure you try saving to an entirely different drive, like a thumb drive.